Just to clarify, you're going to want to be close to level 25 to effectively dig up silver ore. I attempted at 21, and the base % chance was around 48%. So you can either use the 250 GP move and then wait for it to recharge every time, or come back when you're more like 24-25. I'd reccommend the latter. I don't have flawless gear, so it might help a bit, but I think 21 is still too low.

Also, in terms of the gathering log, I haven't gone that far in launch yet, but in the crafting log in P3, the next tier only opens up when you're within 3 levels of it. So at 16 GSM, I could see up to level 19 recipes. Once I hit 18, the next page opened up - as it started @ 21.

If silver ore is in the 26 - 30 page, you may need to be 23 to see it in the gathering log. Another argument for leveling gathering + crafting simultaneously.

Also, in terms of the gathering log, I haven't gone that far in launch yet, but in the crafting log in P3, the next tier only opens up when you're within 3 levels of it. So at 16 GSM, I could see up to level 19 recipes. Once I hit 18, the next page opened up - as it started @ 21.

If silver ore is in the 26 - 30 page, you may need to be 23 to see it in the gathering log. Another argument for leveling gathering + crafting simultaneously.

With gathering the nodes become visible and are added to the log at -4 levels in respect to the node. L25 nodes with silver ore are available at 21.